package com.atguigu.gulimall.auth.controller;

import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.constant.AuthServerConstant;
import com.atguigu.common.exception.BizCodeEnume;
import com.atguigu.common.utils.R;
import com.atguigu.common.vo.MemberRespVo;
import com.atguigu.gulimall.auth.feign.MemberFeignService;
import com.atguigu.gulimall.auth.feign.ThirdPartFeignService;
import com.atguigu.gulimall.auth.vo.UserLoginVo;
import com.atguigu.gulimall.auth.vo.UserRegistVo;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.servlet.http.HttpSession;
import javax.validation.Valid;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

@Controller
public class LoginController {

    @Autowired
    ThirdPartFeignService thirdPartFeignService;

    @Autowired
    StringRedisTemplate redisTemplate;

    @Autowired
    MemberFeignService memberFeignService;

    @ResponseBody
    @GetMapping("/sms/sendCode")
    public R sendCode(@RequestParam("phone") String phone){
        //TODO 1.接口防刷
        String redisCode = redisTemplate.opsForValue().get(AuthServerConstant.SMS_CODE_CACHE_PREFIX + phone);
        if (!StringUtils.isEmpty(redisCode)){
            long l = Long.parseLong(redisCode.split("_")[1]);
            if (System.currentTimeMillis() - 1 < 60000){
                //60秒内不能发送
                return R.error(BizCodeEnume.SMS_CODE_EXCEPTION.getCode(),BizCodeEnume.SMS_CODE_EXCEPTION.getMsg());
            }
        }

        //2.验证码再次校验  redis
        String code = UUID.randomUUID().toString().substring(0, 5);
        String substring = code + "_"+System.currentTimeMillis();
//        String code = codes.split("_")[0];
        System.out.println(code);
        //redis缓存验证码 防止同一个手机号在60秒内再次发送验证码
        redisTemplate.opsForValue().set(AuthServerConstant.SMS_CODE_CACHE_PREFIX+phone,substring,10, TimeUnit.MINUTES);



//        thirdPartFeignService.sendCode(phone,code);
        return R.ok();
    }

    /**
     * //TODO 重定向携带数据，利用session原理 将数据放在session中
     *        只要跳到下一个页面取出这个数据以后 session里面的数据就会删除
     * //TODO 1.分布式下的session问题
     * @param vo
     * @param result
     * @param redirectAttributes
     * @param session
     * @return
     */
    @PostMapping("/regist")
    public String regist(@Valid UserRegistVo vo, BindingResult result,
                         RedirectAttributes redirectAttributes,
                         HttpSession session){
        if (result.hasErrors()){
            Map<String,String> errors = result.getFieldErrors().stream().collect(Collectors.toMap(FieldError::getField, FieldError::getDefaultMessage));
            redirectAttributes.addFlashAttribute("errors",errors);
            //校验出错 转发注册页
            return "redirect:http://localhost:20000/reg.html";
        }
        //1.校验验证码
        String code = vo.getCode();
        String s = redisTemplate.opsForValue().get(AuthServerConstant.SMS_CODE_CACHE_PREFIX + vo.getPhone());
        if (!StringUtils.isEmpty(s)){
            if (code.equals(s.split("_")[0])){
                //删除验证码 令牌机制
                redisTemplate.delete(AuthServerConstant.SMS_CODE_CACHE_PREFIX+vo.getPhone());
                //验证码通过 //真正注册 调用远程服务进行注册
                R r = memberFeignService.regist(vo);
                if (r.getCode() == 0){
                    //成功

                    return "redirect:http://localhost:20000/login.html";
                } else {
                    Map<String,String> errors = new HashMap<>();
                    errors.put("msg",r.getData("msg",new TypeReference<String>(){}));
                    redirectAttributes.addFlashAttribute("errors",errors);
                    return "redirect:http://localhost:20000/reg.html";
                }

            } else {
                Map<String,String> errors = new HashMap<>();
                errors.put("code","验证码错误");
                redirectAttributes.addFlashAttribute("errors",errors);
                return "redirect:http://localhost:20000/reg.html";
            }
        } else {
            Map<String,String> errors = new HashMap<>();
            errors.put("code","验证码错误");
            redirectAttributes.addFlashAttribute("errors",errors);
            return "redirect:http://localhost:20000/reg.html";
        }

    }

    @PostMapping("/login")
    public String login(UserLoginVo vo,RedirectAttributes redirectAttributes
    ,HttpSession session){
        //远程登录
        R login = memberFeignService.login(vo);
        if (login.getCode() == 0){
            MemberRespVo data = login.getData("data", new TypeReference<MemberRespVo>() {
            });
            //成功 放到session中
            session.setAttribute(AuthServerConstant.LOGIN_USER,data);
            return "redirect:http://localhost:10000";
        } else {
            Map<String,String> errors = new HashMap<>();
            errors.put("msg",login.getData("msg",new TypeReference<String>(){}));
            redirectAttributes.addFlashAttribute("errors",errors);
            return "redirect:http://localhost:20000/login.html";
        }
    }

    @GetMapping("/login.html")
    public String loginPage(HttpSession session){
        Object attribute = session.getAttribute(AuthServerConstant.LOGIN_USER);
        if (attribute == null) {
            //没登录
            return "login";
        } else {
            return "redirect:http://localhost:10000";
        }
    }
}
